package com.edu.hibernate;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.criterion.Example;

/**
 * A data access object (DAO) providing persistence and search support for Event
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see com.edu.hibernate.Event
 * @author MyEclipse Persistence Tools
 */

public class EventDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(EventDAO.class);
	// property constants
	public static final String CLASS_ID = "classId";
	public static final String TITLE = "title";
	public static final String SHORT_CONTENT = "shortContent";
	public static final String CONTENTS = "contents";
	public static final String IMG = "img";
	public static final String CREATE_BY = "createBy";
	public static final String EVENT_TYPE = "eventType";
	public static final String IS_EXPERIENT = "isExperient";

	public void save(Event transientInstance) {
		log.debug("saving Event instance");
		try {
			getSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Event persistentInstance) {
		log.debug("deleting Event instance");
		try {
			getSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Event findById(java.lang.Integer id) {
		log.debug("getting Event instance with id: " + id);
		try {
			Event instance = (Event) getSession().get(
					"com.edu.hibernate.Event", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Event instance) {
		log.debug("finding Event instance by example");
		try {
			List results = getSession().createCriteria(
					"com.edu.hibernate.Event").add(Example.create(instance))
					.list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Event instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Event as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByClassId(Object classId) {
		return findByProperty(CLASS_ID, classId);
	}

	public List findByTitle(Object title) {
		return findByProperty(TITLE, title);
	}

	public List findByShortContent(Object shortContent) {
		return findByProperty(SHORT_CONTENT, shortContent);
	}

	public List findByContents(Object contents) {
		return findByProperty(CONTENTS, contents);
	}

	public List findByImg(Object img) {
		return findByProperty(IMG, img);
	}

	public List findByCreateBy(Object createBy) {
		return findByProperty(CREATE_BY, createBy);
	}

	public List findByEventType(Object eventType) {
		return findByProperty(EVENT_TYPE, eventType);
	}

	public List findByIsExperient(Object isExperient) {
		return findByProperty(IS_EXPERIENT, isExperient);
	}

	public List findAll() {
		log.debug("finding all Event instances");
		try {
			String queryString = "from Event";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Event merge(Event detachedInstance) {
		log.debug("merging Event instance");
		try {
			Event result = (Event) getSession().merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Event instance) {
		log.debug("attaching dirty Event instance");
		try {
			getSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Event instance) {
		log.debug("attaching clean Event instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
}